diff --git a/prelude.f b/prelude.f
index 2a98be9..95297b5 100644
--- a/prelude.f
+++ b/prelude.f
@@ -38,6 +38,18 @@
 
 : RECURSE LATEST @ >CFA , ; IMMEDIATE
 
+\ Block comments (with nesting)
+
+: (
+  BEGIN
+    KEY DUP
+    40 = IF RECURSE THEN
+    41 =
+  UNTIL
+; IMMEDIATE
+
+( ( Take that, C ) )
+
 \ Peripheral register addresses
 
 : TXBUF 0 ;